On the Carboniferous Series of North America. 125 



My route lay up the Mississippi and Ohio rivers to Pittsburg, 

 and thence overland to Lake Erie, to Buffalo, Niagara, and 

 partly by land and partly by water through the state of New 

 York to the city of that name. In this course, from the first 

 visible rocks of carboniferous limestone and its occasional as- 

 sociates of shale and sandstone adjacent to the Mississippi and 

 Ohio rivers, to the continuous coal measures which come in 

 force near the influx of the great Kanawha into the latter 

 river, extending thence westward into the state of Ohio, and 

 northward through ihe Virginia, Pennsylvania and New York 

 States to Lake Erie, I was very forcibly struck by the nearly 



Vol.23. Professor Eaton on the coal beds of Pennsylvania, as being equiva- 

 lent to the great secondary coal measmes of Europe. (1833.) He 

 deprecates the application of the term transition either to the car- 

 boniferous rocks of the Alleghany or Catskill mountains; and 

 refers to his Geological Text-book, p. 91, second edition (183.2); 

 in which see hereon in particular pp. 66, 67, 79, 90, 110, 121, 124, 

 125, as affording further evidence on the question. 

 N.B. The relations of the carboniferous series have been much ob- 

 scured by the peculiar terms employed by this author ; the signi- 

 fication of which, however, has been explained by Mr. G. W. 

 Featherstonhaugh in a manner that quite accords with the con- 

 struction I had myself put on what came under my own observation 

 dunn<y the course of my travels. See vol. i. p. 92 of Proceedings 

 of the Geological Society of London (1828), and Phil. Mag. and 

 Annals, vol. v. pp. 138, 139.(1829.); [also vol. vi. p. 75, 76, and 

 Lond. and Edinb. Phil. Mag. vol. vii. p. 515, note.— Edit.] 

 25. Ten days in Ohio by a naturalist. (1834.) 



29. Dr. Hildreth on the bituminous coal deposits of the valley of the 

 Ohio (1835.) This is a particularly valuable memoir for the de- 

 tails it affords. 

 Mr. G. W. Featherstonhaugh. Geological Report made to both Houses of Con- 

 gress. (1835.) 

 Mr. R. C. Taylor, on the north-eastern extremity of the Alleghant/ moun- 

 ' tain range in Peniuylvania, in Loudon's Magazine of Natural History. 

 (Oct. 1835.) 

 In the first volume of the Transactions of the Geological Society of Penn- 

 sylvania. (1835.) 



Mr. R. C. Taylor on the relative position of the transition and se- 

 condary coal formations in Pennsylvania. 

 The same author on the coal basin of Blossburg on the Tioga river. 

 Professor Proost, four papers on the organic remains of the carbo- 

 niferous limestone of Tenessee, &c. 

 Mr. E. Miller, Geological description and section of a portion of the 



Alleghany mountain west of Hollydaysburg. 

 Dr. Harlan on the fossil vegetable remains in the bituminous coal 

 measnrescf the Alleghany mountains referred to in Mr.E. Miller's 



Mr. T. A. Conrad on some fossil shells presented by Mr. E. Miller 

 from the Alleghany mount.iins. 



Mr. R. C. Taylor, Memoir of a section passing through the bitu- 

 minous coal field near Richmond, in Virginia. 



